Can you me solve this equation (-3√7)²+(3√11)²?

Which of the following graphs could represent a cubic function?

Need so much on this one how many yards?

Francis is getting new carpet tiles in his living room and den. his living room and den are connected. he needs to figure out how much carpet he needs and the cost involved. if each tile costs $2.00 per sq ft, how much would it cost to have new tile put in the den? a) $24 b) $36 c) $48 d) $54 plz awnser soon